T88.53 vs Z92.84
T88.53 (Unintended awareness under general anesthesia during procedure) compared with Z92.84 (Personal history of unintended awareness under general anesthesia), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. T88.53 carries an Excludes2 note covering Z92.84: “personal history of unintended awareness under general anesthesia (Z92.84)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Yes, when both are documented. Z92.84 carries an Excludes2 note covering T88.53: “unintended awareness under general anesthesia during procedure (T88.53)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| T88.53Unintended awareness under general anesthesia during procedure | Z92.84Personal history of unintended awareness under general anesthesia | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Unintended awareness under general anesthesia during procedure is a non-billable ICD-10-CM category code (T88.53). | Personal history of unintended awareness under general anesthesia is a billable ICD-10-CM diagnosis code (Z92.84). |
| 7th character | The appropriate 7th character is to be added to each code from category T88 | — |
| Use additional code | code for adverse effect, if applicable, to identify drug (T41.- with fifth or sixth character 5) code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) code(s) to identify the specified condition resulting from the complication | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources